I have a couple of log entries from the Batch ripper which are as follows:

AccurateRip: Inaccurate (confidence 13) Insecure [Pass 1 & 2, Ultra 1 to 6, Re-Rip 41 Frames]

AccurateRip: Inaccurate (confidence 10) Secure (Warning) [Pass 1 & 2, Ultra 1 to 6, Re-Rip 15 Frames]

I know that the first portion of both entries is telling me that the tracks were not ripped accurately. I am a bit unclear though as to what is meant by last portion. My questions are:
1) How many passes were actually performed on these tracks?
2) What is meant by "Secure (Warning)"

Thanks,
Steve